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(A) Schematic of the workflow of fabricating hydrophobic-hydrophilic patterned Au/SiNWs. (B) Schematic illustration of the hydrophilic/hydrophobic mesh on the substrate. A water droplet easily rolls to a hydrophilic region. Photographs of the water droplets immobilized onto the hydrophilic islands of the patterned hydrophilic/hydrophobic substrate.
